Nuclear weapons can produce some of the most devastating destruction of any device ever created by humankind -- so what ...

On Mar. 28, 1979, the most significant nuclear power accident in U.S. history began after a pressure valve failed to close at ...

Between 1980 and 1989, four people between two young families would die of leukemia. The connection? They all lived in the same room in an apartment building in Kramatorsk, Ukraine. Th ...

Wizened veterans of Central Pennsylvania’s “No Nukes” movement used the 46th anniversary of the partial meltdown at Three ...

The Los Alamos National Laboratory Historical Society is releasing new photos that John “Mike” Michnovicz took during the ...

At its worst, some experts say, a dirty bomb attack might be comparable to a radiation accident, perhaps like the one in Brazil in 1987, when more than 200 people were exposed—4 fatally—to ...

Since then, about 50 people have died from radiation sickness. That includes 28 workers and firefighters who were killed at the 1986 nuclear accident at Chernobyl in what is now Ukraine.